高中英语CyberspaceGrammarprediction北师大必修PPT课件

1、情态助动词从它们表示不同程度的推测可分为表示 “可能”的might，may，could，can；表示“很有可能”的should，ought to，would，will；表示“肯定”的must。假如出现如下情景，甲说“门外有人敲门”，乙的回答可能是：第1页/共13页对现在或客观事实的肯定推测一般用must, will, should, may(might)或could，语气依次递减。 1. Helen _go on the trip with us but she isnt quite sure yet. (2005安徽) A. shall B. must C. may D. can 第2页/共

2、13页2. Ive taken someone elses green sweater by mistake. It _ Harrys. He always wears green. (2005广东广东) A. has to be B. will be C. mustnt be D. could be 3. That, I think, _ be all that I want to say. A. can B. could C. will D. ought to 第3页/共13页分析：must的语气最强，译为“肯定”、“准是”、“想必是”；should的语气次之，译为“很可能”、“应该”，指

3、按常理推测；may(might)译为“也许、大概”，表示把握不大的推断，后面常跟but。could的语气最弱，译为“也许”、“可能”。 第4页/共13页Dont phone them nowtheyll be having dinner现在不要给他们打电话他们很可能在吃晚饭。It is unlikely that you will have any difficulty getting the tickets你去拿票子不见得会有困难吧。第5页/共13页 对现在或客观事实的否定推测，常用cannot译为“根本不可能”、“想必不会”，表示推测的语气非常肯定, may not, might not或

4、could not译为“可能不”、“也许不”，表示推测的语气不很肯定。第6页/共13页如果“be going to +动词原形” 后有明确的时间状语，则表示该动作或状态发生的可能性较大；反之，则表示一种推测，表示未来可能发生的事情。例如：There is going to be a film in our school this evening. 今晚我们学校将有一场电影。（一种安排,一定会发生）Hurry up! We are going to be late. 快点！我们要迟到了.(仅表示一种推测)第7页/共13页We are going to have a class meeting t

5、his afternoon.今天下午我们打算开班会。（一种安排,一定会发生 ） Look at the black clouds. Its going to rain.看那些乌云,快要下雨了。(推测) Im not feeling well, Im going to be ill. 我感觉不是很好, ,可能要生病了。(推测) 第8页/共13页will 更强调依据直觉、知识和经验作出推测。be going to 更强调依据当时可以观察到的证据、事实作出推测。Note to will, be going to第9页/共13页Answers for reference (p9)1 a) 2 b) 3

6、 b) 7891 a) 2 a) (1) is going to (2) will (3)will (4) is going to (5)will第10页/共13页Answers for reference (p9)1. Look at the two bumper cars. Im sure they will crash into each other.2. Obviously, the woman is going to have a baby.3. The boy is so absorbed that Im afraid he will walk into the post.4. Its clear that the house is going to fall into the river.10第11页/